The attached article from CPNI in the UK will assist desingers in planning for security bollards in pedestrian area's. When considering the installation of bollards in the public realm, designers should take a holistic approach to ensure an appropriate level of physical protection is provided whilst minimising any negative impact on pedestrian movement. To meet security requirements, bollards must be positioned to maximise blast stand-off distance, and spaced at a maximum air gap of 1,200mm. Additional considerations include meeting objectives for health and safety, site operation, cost and aesthetics. Sites that experience high volumes of pedestrian use must accommodate movement safely, and at the required level of comfort and convenience. Many organisations take advantage of a variety of site assessment methods, including the use of pedestrian simulation software tools to integrate pedestrian movement analysis into their design process.